Alveoli Features & Breathing

Mind Map by , created about 6 years ago

GCSE Biology (Gas Exchange) Mind Map on Alveoli Features & Breathing, created by 9arush on 08/11/2013.

Created by 9arush about 6 years ago
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GCSE AQA Chemistry 2 Salts & Electrolysis
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Biology AQA 3.1.4 Lung Function
Biology AQA 3.2.7 Gas Exchange
Enzymes and Respiration
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Biology AQA 3.2.5 Mitosis
Biology- Genes and Variation
Laura Perry
Alveoli Features & Breathing
1 Alveoli features
1.1 Diffusion distance
1.1.1 Single layer of cells - rapid gas exchange
1.2 Increased surface area
1.2.1 Great number of alveoli
1.3 Dense network of capillaries
1.3.1 Supply of blood with low O2 & high CO2 concentration
1.4 Secretion of fluid
1.4.1 Allows gases to dissolve & prevent sides of alveoli sticking
1.5 Cilia
1.5.1 fine 'hairs' on cell surface
1.5.2 Beat in a co-ordinated way to carry mucus ( with trapped microbes & dust) away from the lungs
1.6 Goblet cell
1.6.1 Produces sticky mucus & releases it onto the cell surface
2 Breathing
2.1 At rest
2.1.1 CO2 level & blood pH are kept at safe level
2.2 During exercise
2.2.1 more air must be breathed in & out as muscle have to work harder
2.2.2 Deeper more rapid breathing More CO2 lost from lungs
2.2.3 Deeper more rapid heartbeat More blood pumped to tissues to carry CO2 away

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